Poisoning by coronary vasodilators, undetermined, subs

This code signifies a poisoning event involving medications intended to widen coronary arteries, where the intent (accidental, intentional self-harm, assault) cannot be determined. The patient is receiving active treatment for the sequelae of the poisoning, or for complications that arose during the initial encounter.

Apply this code when a patient presents for follow-up care, monitoring, or management of ongoing effects from an undetermined poisoning by a coronary vasodilator. This includes situations where the initial acute phase of treatment is over, but the patient still requires medical attention related to the poisoning.

• Ensure the documentation clearly states "undetermined" intent for the poisoning.
• Confirm the encounter is for subsequent care, not the initial acute treatment.
• Always code the specific coronary vasodilator if known, using an additional code from T36-T50.